Population history of the terrestrial orchid Cremastra appendiculata var. variabilis from Korea, inferred from levels and distribution of genetic diversity
Population history of the terrestrial orchid Cremastra appendiculata var. variabilis from Korea, inferred from levels and distribution of genetic diversity
复制标题
DOI：
10.1111/boj.12109
复制
发表时间：
2013-12
影响因子：
2.4
通讯作者：
M. Chung;J. López‐Pujol;Myung-Ok Moon;M. Maki;T. Yukawa;N. Sugiura;M. Chung
中科院分区：
文献类型：
--
作者：
M. Chung;J. López‐Pujol;Myung-Ok Moon;M. Maki;T. Yukawa;N. Sugiura;M. Chung
尾兰（Cremastra appendiculata var. variabilis）是一种自交、昆虫授粉的陆生兰花，是朝鲜半岛暖温带植被的典型成员。在这里，我们研究了这种兰花的12个种群的等位酶多样性（22个位点）的水平和分配，以深入了解其遗传结构和冰川后在韩国的殖民历史。其居群内遗传变异水平（%P = 48.1, A = 1.70, He = 0.217）显著高于其他陆生兰科植物，居群间分化程度（FST = 0.068）显著低于同酶研究结果。这些模式表明现存的种群来源于多个来源种群（即来自多个冰川避难所），尽管需要进一步的研究来证实这一假设。除种群历史外，诸如种子传播潜力高、混合交配系统及其在大型连续种群中的发生等特征也可能对韩国附录c var. variabilis群体当前的遗传多样性水平和分布做出了贡献。©2013伦敦林奈学会，林奈学会植物学杂志，2013,173,721-732。
Cremastra appendiculata var. variabilis is a self-compatible, insect-pollinated, terrestrial orchid that is a typical member of the warm-temperate vegetation in the Korean Peninsula. Here we examine levels and partitioning of allozyme diversity (22 loci) in 12 populations of this orchid to gain insight into its genetic structure and post-glacial colonization history in Korea. It harboured considerably higher levels of genetic variation within populations (%P = 48.1, A = 1.70 and He = 0.217) and lower degree of differentiation among populations (FST = 0.068) than those typical of allozyme-based studies in other terrestrial orchid species. These patterns suggest that extant populations were derived from multiple source populations (i.e. from multiple glacial refugia), although further studies are needed to confirm this scenario. In addition to population history, traits such as high potential of seed dispersal, a mixed mating system and its occurrence in large and continuous populations would have contributed to the current levels and distribution of genetic diversity in Korean populations of C. appendiculata var. variabilis. © 2013 The Linnean Society of London, Botanical Journal of the Linnean Society, 2013, 173, 721–732.